Full time!
FT The referee blows his whistle for the end of the match and what a brilliant win for Slovakia! Although they were second best for most of the night, they displayed the qualities that got them here: tenacity, toughness and being opportunistic. Games against Spain and Sweden lie ahead, but they'll be in with a shout for the knockout rounds now.
Poland created more chances, had more shots, but didn't take advantage before going down a man. Lewandowski received very little help and the sending off essentially cost them the game as Slovakia scored the match-winner soon after. There's too much quality in the side not to be heard from, but with two tougher opponents awaiting, the Poles are in a bit of trouble.
That's all for me for now. Stay tuned for more action from Euro 2020. From all of us at VAVEL, this is John Lupo signing off and saying take care for now!
Last-gasp effort from Poland
90'+4 One final chance for Poland as Swiderski shoots on ther turn after brilliant hold-up play from Lewandowski, who sets him up, but he’s unable to get enough power behind his effort to trouble Martin Dubravka, who saves comfortably.
Slovakia substitution
90'+3 Slovakia make their final change as Jan Gregus replaces Ondrej Duda.
Slovakia fail to extend their lead
90'+2 Bednarek has a shot blocked from about 14 yards out but gets another bite of the cherry, which he spins and scuffs the ball wide the wrong side of the upright.
Slovakia holding on
90' Poland win a free-kick on the left. Substitute Moder curls the ball into the penalty area, where Dubravka punches clear.
Double Slovakia change
88' Slovakia doube-substitution from a couple of minutes ago: Michal Duris and Tomas Suslov on for Mak and Haraslin.
Poland continues to struggle
86' Another sign of Poland's efforts so far: Glik shoots goalwards and it's put out for a corner. The ensuing inswinger travels across the face of goal, somehow eluding four different Polish players on its way wide.
Double change again for Poland
85' Poland double-substitution as Jakub Moder and Karol Swiderski come on for Zielinski and Klich. Remember, five changes at the Euros instead of the normal three.
More frustration for Poland
84' Poland win a corner and the delivery is headed clear but only as far as Puchacz. However, he slices his effort from the edge of the area high and wide. Typical of the Poles' day so far.
Double change for Slovakia
78' SMartin Koscelnik and Patrik Hrosovsky replace Hromada and Pekarik for Slovakia.
Double change for Poland
72' Frankowski and Puchacz come on for Rybus and Linetty.
Slovakia take the lead!
GOAL! 69' The underdogs are in front again as from a corner, Milan Skriniar lashes the ball into the bottom left-hand corner from the edge of the penalty area, making Slovakia's numerical advantage count.
Slovakia half-chance
68' Haraslin fires into the side-netting, the ball taking a deflection on the way. Corner for Slovakia.
Poland down to 10 men!
62' Grzegorz Krychowiak gets his second yellow card for a late challenge on Jakub Hromada. It’s swiftly followed by a red and he is off.
Missed opportunity for Poland!
52' What a chance! Kamil Glik meets an inswinger from a corner kick with his head, but it goes over. He should have given Poland the lead there.
Another chance for Linetty!
51' The goal-scorer is in the mood and he pounces on another pull-back, this time from Klich. The shot lacks power and Dubravka saves easily.
Poland level!
GOAL! 46' Just seconds after the restart, Klich and Lewandowski do some fine work down the left and Linetty sweeps a pull-back by Rybus from about nine yards out past Dubravka, who couldn't keep it out despite being at full stretch.
Halftime
HT Referee Ovidiu Hategan whistles for halftime as an outstanding solo effort by Mak has Slovakia out in front despite being outplayed for most of the half. He and Hamsik have been the engine to make the Slovaks go.
Lots of chances for Poland, but none that posed any real danger. Lewandowski has had a couple of those, but nothing of note as yet. If they keep up this pressure, you feel a goal is inevitable.
Hamsik has another go!
45' The Slovakian skipper has been the standout player of the first half and he sees his long-range effort blocked by a Polish defender.
Lewandowski half-chance
40' Poland attack on the break, with Lewandowski on the ball. He hesitates, plays the ball wide and then sends a half-chance wide when he gets it back, sending a diagonal effort across the face of goal and wide.
Poland keeping up the pressure
35' Two more chances for Poland. Krychowiak shoots from distance but sends his shot a couple of feet over the bar. Moments later, Zielinski also has a go, but also fails to find the target.
Hamsik making his mark
32' Hamsik again turns provider, this time playing Pekarik in behind Jan Bednarek down the right flank. His cross is inch perfect for Kucka, but his header is saved easily by Szczesny.
Long-range effort for Slovakia!
30' Marek Hamsik, so vital to everything Slovakia does, tries his luck from distance, but from the left corner of the Polish penalty area, but Klich gets his body in front to block.
Favorites continue pressure
24' Poland is again on the attack down the right and after the ball is squared to Maciej Rybus, he fails to properly connect.
Slovakia take the lead!
GOAL! 18' Disaster strikes for Poland as moments after Róbert Mak hits the woodwork, he works his way down the left past Jóźwiak and after an unsuccessful slide tackle by Bereszyński, he works his way into the penalty area.
A firm, low strike bounces off of the near post and dribbles past Polish goalkeeper Wojciech Szczęsny and into the net. Mak gets credit for the goal, but it may be changed to an own goal.
Chance for Slovakia!
14' First real good opportunity for the underdogs as Ondrej Duda performs a couple of stepovers and drives a shot low and left from the edge of the penalty area, but it goes a couple of yards wide.
Chance for Poland!
9' After Mateusz Klich is fouled by Juraj Kucka, the ensuing free-kick is taken and Slovakian goalkeeper Martin Dubravka comes out to punch clear and avert the danger.
First shot for Lewandowski
6' It only ricochets off of his own teammate, but it's a clear sign of intent from perhaps the best striker in the world.
Match starts!
We are underway!
Slovakia starting lineup
Dubravka; Hubocan, Skriniak, Satka, Pekarik; Hromada, Kucka; Mak, Haraslin; Hamsik, Duda
Poland starting lineup
Szczesny; Rybus, Bednarek, Glik, Bereszynski; Klich, Krychowiak, Linetty; Zielinski, Lewandowski, Jozwiak
Stay tuned!
Don't miss any of the action with live updates here. Follow along with all the details, commentary, analysis and lineups for this match between Poland and Slovakia.
How to watch Poland vs Slovakia
The match will be broadcast on ESPN with kick-off set for 17:00 BST.
The WatchESPN app will also have live streaming coverage.
If you can't watch, stay here with me for all of the action!
Poland key player
Robert Lewandowski is the best striker at the Euros and after a 41-goal season for Bayern Munich, in which he led them to another Bundesliga title, looks in the mood to score plenty of times during this competition.
Slovakia key player
Marek Hamsik is the key man for the Tartans. Handed the captaincy at age 22, he's been the creative force of the side and the heart of the club.
Projected Poland lineup
Szczesny; Bednarek, Gilk, Bereszynski; Puchacz, Krychowiak, Klich, Jozwiak; Zielinski; Swierczok, Lewandowski
Slovakia projected lineup
Dubravka; Hubocan, Satka, Skriniar, Pekarik; Hrosovsky; Mak, Hamsik, Kucka, Duda; Bozenik
Poland eye deep run
The Poles are in their fourth consecutive Euros with their best result coming in the last edition of the tournament: a quarterfinal showing in 2016.
Slovakia back in the big time
Since becoming an independent nation in 1993, the Tartans have only qualified for two other major international competitions: the 2010 World Cup and Euro 2016, where they were eliminated at the first hurdle each time.
Kick-off time
The Poland vs Slovakia match will be played at the Krestovsky Stadium in St. Petersburg, Russia. Kick-off is scheduled for 17:00 pm ET.